Troubleshooting
14
309455C
Troubleshooting
Problem
Cause
Solution
Spray gun test shows low voltage.
Gun ES HI/LO switch on low (smart
guns only).
Check switch position.
Gun ES ON/OFF valve turned OFF.
Turn ON.
Air pressure to gun too low.
Increase air pressure; air pressure
must be at least 40 psi (2.8 bar) at
the gun air inlet.
KV meter not grounded.
Connect the kV meter ground wire to
a true earth ground; see F
IG
. 1.
KV meter connected wrong.
Correct connection; see F
IG
. 1.
Fluid resistivity too low.
Check fluid resistivity with paint
meter and probe.
Faulty gun resistance.
Check gun resistance; see gun man-
ual.
Fluid leaks from needle packing and
causes short.
Clean needle cavity and replace fluid
needle assembly.
Dirty gun.
Clean the gun.
Faulty power supply.
Test power supply; replace if faulty.
Faulty turbine alternator.
Test alternator; replace or rebuild if
faulty.*
Power supply test shows low voltage. Gun's ES switch is positioned for low
voltage setting.
Move ES switch to high voltage set-
ting position; see F
IG
. 7..
Probe is not making contact with
power supply contact.
Remove the probe, then push it into
the shroud until it presses firmly
against the power supply contact.
KV meter not grounded.
Connect the kV meter ground wire to
a true earth ground; see F
IG
. 1.
KV meter connected wrong.
Correct connection; see F
IG
. 1.
Air pressure to fixture too low.
Increase air pressure; air pressure to
fixture must be at least 30 psi (0.21
MPa, 2.1 bar).
Fixture's air bypass not plugged.
Make sure the probe shroud is tightly
secured to the fixture.
Faulty alternator.
Test alternator; replace or rebuild if
faulty.*
* See
Accessories
to order a repair kit.
Summary of Contents for 309455C
Page 11: ...Operation 309455C 11 ...